A faulty engine control module (ECM) ground circuit may cause various issues including stalling, loss of air conditioning operation, and illumination of the Check Engine Light. Our technicians tell us that adding another ground wire to the ECM wire harness can often correct this issue.
Resources for the Repair and Maintenance of your 1990 Hyundai Excel
1990 Hyundai Excel
1990 Hyundai Excel Problems
The manual transmission may become difficult to shift into third gear. This is common caused by worn synchronizers. Our technicians tell us that revised synchronizers are available to correct this concern.
The engine may stall when shifting the automatic transmission into reverse. This is commonly caused by a clogged transmission cooler line or fluid cooler. If this occurs transmission fluid flow will need to be restored by replacing the cooler and/or lines as necessary.
The engine may be slow to warm up due to a stuck open thermostat. Replacement of the thermostat is required to correct this issue.
The coolant valve under the right side of the dash may develop a leak. This can easily be mistaken for a leaking heater core. Our technicians recommend careful diagnoses of coolant leaks in the area.
1990 Hyundai Excel Recalls (Recent)
Summary: LOCK WASHER LOCATED UNDER THE NUT THAT SECURES THE FRONT HUB TO THE DRIVE SHAFT MAY HAVE HAD IMPROPER HEAT TREATMENT AND COULD CRACK.Learn more »
1990 Hyundai Excel Reviews
I had my Hyundai Excel for 6 years. It was generally a good car, but of course not as reliable as a Toyota or Honda. It ran great with very minimal problems and few repairs, just a few with the alternator shorting out, but that was easy and inexpensive to fix. After 100,000 miles, all hell broke loose. I have to admit that I drove the car pretty hard, but still this car is just not designed to go much longer than 100K miles. If I had sold it at 100K miles, I would have had only a great experience, so take the following with a grain of salt, and don't buy one of these with high miles on it! At about 105K miles, the transmission went out and had to be rebuilt. The valve cover gasket was leaking oil, but I never got that fixed, as it still ran as long as I added some oil every now and then. Then the air conditioning quit working. After that, it started over-heating. On any hot day, it would boil over and I used to keep gallons of water in the trunck so I was prepared. Of course, when it boils over, it leaves a hard water scale residue inside the motor cooling passages, so with each time it gets a little worse. This is a good inexpensive car which will serve you well as long as it doesn't have high miles, which is fair given the low cost. Good car; buy it young and don't drive it too long.